Nausea is the feeling of painless discomfort in the stomach that you might experience on occasion. It could be the result of hormonal changes -- as is common among pregnant women -- or a symptom of some deeper underlying disease.
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Most people are familiar with the basics about calories: Calories are the fuel on which the body is run, unused calories get converted into fat, and too many stored calories is what leads to the belly paunch that few people love. There are, however, other details about calories that are not common knowledge.
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